Direct cooling type high-temperature superconducting current lead structure of refrigerating machine

The direct-cooling type high-temperature superconducting current lead structure comprises a room-temperature section, and the room-temperature section is composed of a room-temperature copper connector, a room-temperature end insulation electrode and a room-temperature flange; the copper lead section adopts a copper lead and is bent into a concave shape; an oxygen-free copper transition section of the first-stage cold head section, a G10 crimping plate and a first-stage cold conduction copper plate are connected in a nut crimping manner according to an'indium sheet-aluminum nitride gasket-indium sheet 'stacking sequence; the high-temperature superconducting section of the current lead is mainly formed by welding a high-temperature superconducting stack into a stainless steel diverter groove; the second-stage cold head section is composed of a second-stage cold conduction copper plate and a second-stage oxygen-free copper transition section. According to the invention, the processing and mounting process of a